Semi-automatic riveting machine

Abstract

The utility model discloses a semi-automatic riveting machine which comprises four sets of supporting columns located at the bottom of the whole device, an operation table is fixedly installed on the four sets of supporting columns, a pair of supports is fixedly installed at the side end of the operation table, a main machine frame is fixedly installed on the pair of supports, and the main machine frame is fixedly installed on the supporting columns. And a driving mechanism is fixedly mounted in the center of the top of the main rack. The clamping rods of the device can move in the sliding holes, when one or more clamping rods make contact with workpieces, the clamping rods can be extruded into the air cavity, at the moment, the remaining clamping rods can move outwards, and therefore it is guaranteed that various special-shaped workpieces can be stably clamped; by means of the design, the clamping points can be automatically adjusted when the clamping mechanism clamps workpieces of different shapes and sizes, it is ensured that each clamping point can make firm contact with the workpieces, the clamping adaptability is improved, meanwhile, through uniform clamping pressure distribution, damage to the surfaces of the workpieces is reduced, and the integrity of the workpieces is protected.

Description

Technical Field

[0001] This utility model relates to the field of metal processing technology, and more specifically, to a semi-automatic riveting machine. Background Technology

[0002] Riveting is a common mechanical joining method that uses rivets to fasten two or more workpieces together. Traditional riveting methods typically require manual operation, resulting in low efficiency and inconsistent quality. To improve production efficiency and quality, semi-automatic riveting machines have emerged. These machines combine the flexibility of manual operation with the precision of mechanical operation and are widely used in various industries, such as automotive manufacturing, aerospace, furniture manufacturing, and electrical equipment assembly.

[0003] A semi-automatic riveting machine, disclosed in patent publication CN214236135U, includes a vibratory feeder, a feeding mechanism, a frame, a movable clamp, a first cylinder, a riveting mechanism, and a riveting seat. The feeding mechanism is connected to the outlet of the vibratory feeder and to the frame via a flexible hose. The movable clamp is positioned below the hose and is driven horizontally by the first cylinder. The riveting seat is mounted on the frame, and the riveting mechanism is positioned above it. The riveting mechanism and the riveting seat are used to insert rivets into aluminum sheets. This invention temporarily clamps the rivets using a movable clamp, replacing manual hand clamping and greatly improving riveting safety. Simultaneously, a negative pressure air hole is provided at the end of the rivet head, using negative pressure suction to attract the rivets and ensure they remain in the same position as the rivet head during downward movement. The feeding mechanism uses pneumatic feeding, eliminating the need to place the vibratory feeder at a high position.

[0004] The shortcomings of the above-mentioned device are as follows: During use, the device drives the workpiece to be clamped by a movable fixture and a first cylinder. The clamping method is relatively fixed and it is difficult to adapt to irregular workpieces with diverse shapes and sizes. At the same time, an additional cylinder is required to drive the movable fixture, which increases energy consumption. In addition, there are many pipelines, which can easily lead to energy loss and reduced system response speed. The device is prone to damage to the surface of the workpiece during the clamping process. Especially when clamping irregular workpieces, uneven local pressure may cause workpiece deformation or surface scratches. Utility Model Content

[0005] The purpose of this invention is to provide a semi-automatic riveting machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a semi-automatic riveting machine, comprising support columns, wherein there are four sets of support columns located at the bottom of the entire device, an operating table is fixedly installed on the four sets of support columns, a pair of brackets is fixedly installed on the side end of the operating table, a main frame is fixedly installed on the pair of brackets, a drive mechanism is fixedly installed at the top center of the main frame, the drive mechanism is electrically connected to a foot switch via a wire, and a clamping mechanism is installed below the main frame.

[0007] As a preferred technical solution of this utility model, the main frame is hollow inside and a slide is fixedly installed thereon. Slide grooves are provided on both sides of the slide, and a slider is slidably connected to each of the slide grooves.

[0008] As a preferred embodiment of this utility model, a rack is fixedly installed at the bottom of the slider, a through hole is opened in the middle of the slide block and a bearing is installed thereon, and a threaded cylinder is installed inside the bearing.

[0009] As a preferred technical solution of this utility model, a gear is fixedly installed at the bottom of the threaded cylinder, the gear meshes with racks on both sides, the drive mechanism includes a cylinder fixedly installed on the top of the main frame, the output end of the cylinder is downward and a threaded rod is fixedly installed through a piston rod, the threaded rod is threadedly connected to the threaded cylinder, and a riveting head is fixedly installed at the end of the threaded rod.

[0010] As a preferred embodiment of this utility model, guide holes are provided at both ends of the main frame, and the clamping mechanism includes an L-shaped connecting rod that is slidably connected to the guide hole. The upper end of the L-shaped connecting rod is fixedly connected to the side of the slider, and a clamping block is fixedly installed at the lower end of the L-shaped connecting rod.

[0011] As a preferred embodiment of this utility model, the clamping block has an air cavity inside, a sliding hole is provided on one side of the clamping block and communicates with the air cavity, a limit ring is fixedly installed at the end of the sliding hole, a sealing block is slidably connected inside the sliding hole, and a clamping rod is fixedly installed on the outside of the sealing block.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) The cylinder drives the threaded rod to descend through the piston rod, which in turn drives the threaded cylinder to rotate. The threaded cylinder drives the gear to rotate, and the gear drives a pair of sliders to move. The sliders drive the clamping blocks to move towards each other through the L-shaped connecting rod to clamp the workpiece. No other cylinder is needed to drive the clamping blocks, which saves the extra cylinders and pipelines, making the overall structure more compact, reducing the size and weight of the equipment, and making it easier to install and maintain.

[0014] (2) The clamping rods can move within the sliding hole. When one or more clamping rods come into contact with the workpiece, they will be squeezed into the air chamber. At this time, the remaining clamping rods will move outward, so that the remaining clamping rods can also come into contact with the workpiece, thus ensuring that various irregular workpieces can be stably clamped. This design allows the clamping mechanism to automatically adjust the clamping points when clamping workpieces of different shapes and sizes, ensuring that each clamping point can firmly contact the workpiece, improving the adaptability of clamping. At the same time, through uniform clamping pressure distribution, the damage to the workpiece surface is reduced, protecting the integrity of the workpiece. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a semi-automatic riveting machine according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a semi-automatic riveting machine main frame according to an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a semi-automatic riveting machine slide according to an embodiment of the present utility model;

[0019] Figure 4 This is a structural schematic diagram of the internal cross-section of a semi-automatic riveting machine clamping block according to an embodiment of the present utility model.

[0020] Figure label:

[0021] 1. Support column; 2. Operating table; 3. Bracket; 4. Main frame; 5. Drive mechanism; 6. Foot switch; 7. Clamping mechanism; 8. Slide; 9. Slide groove; 10. Slider; 11. Rack; 12. Bearing; 13. Threaded cylinder; 14. Gear; 15. Cylinder; 16. Threaded rod; 17. Riveting head; 18. Guide hole; 19. L-shaped connecting rod; 20. Clamping block; 21. Air chamber; 22. Sliding hole; 23. Limiting ring; 24. Sealing block; 25. Clamping rod. Detailed Implementation

[0022] The utility model will now be further described with reference to the accompanying drawings and specific embodiments:

[0023] Please see Figure 1-4According to an embodiment of the present utility model, a semi-automatic riveting machine includes support columns 1, four sets of support columns 1 located at the bottom of the entire device, an operating table 2 fixedly installed on the four sets of support columns 1, a pair of brackets 3 fixedly installed on the side end of the operating table 2, a main frame 4 fixedly installed on the pair of brackets 3, a drive mechanism 5 fixedly installed at the top center of the main frame 4, the drive mechanism 5 being electrically connected to a foot switch 6 via a wire, and a clamping mechanism 7 installed below the main frame 4.

[0024] The device includes four sets of support columns 1, distributed at the four corners to provide balanced support. The operating platform 2 is fixedly mounted on the support columns 1, allowing operators to work standing or seated. A pair of brackets 3 ensure the main frame 4 is securely mounted on the operating platform 2. The main frame 4 is hollow internally for easy installation and maintenance of internal components. A foot switch 6 is electrically connected to the drive mechanism 5 via a wire, enabling semi-automatic control.

[0025] In this embodiment, the main frame 4 is hollow inside and a slide block 8 is fixedly installed. Slide grooves 9 are provided on both sides of the slide block 8, and a slider 10 is slidably connected to each of the two slide grooves 9.

[0026] The slide block 8 ensures the smooth movement of the slider 10. The slider 10 slides in the slide groove 9, precisely controlling its movement position.

[0027] In this embodiment, a rack 11 is fixedly installed at the bottom of the slider 10, and a through hole is opened in the middle of the slide block 8 and a bearing 12 is installed thereon. A threaded cylinder 13 is installed inside the bearing 12.

[0028] The rack 11 is fixed to the bottom of the slider 10 and meshes tightly with the gear 14. The bearing 12 is installed in the through hole in the middle of the slide block 8 to ensure the smooth rotation of the threaded cylinder 13. The threaded cylinder 13 converts the rotational motion of the threaded rod 16 into the rotation of the gear 14.

[0029] In this embodiment, a gear 14 is fixedly installed at the bottom of the threaded cylinder 13. The gear 14 meshes with the racks 11 on both sides. The drive mechanism 5 includes a cylinder 15 fixedly installed at the top of the main frame 4. The output end of the cylinder 15 is downward and a threaded rod 16 is fixedly installed through the piston rod. The threaded rod 16 is threadedly connected to the threaded cylinder 13. A riveting head 17 is fixedly installed at the end of the threaded rod 16.

[0030] The cylinder 15 provides power to drive the threaded rod 16 downward. The threaded rod 16 is threadedly connected to the threaded cylinder 13, converting the linear motion of the cylinder 15 into the rotational motion of the threaded cylinder 13. The riveting head 17 is fixed to the end of the threaded rod 16 and acts directly on the rivet on the workpiece.

[0031] In this embodiment, guide holes 18 are provided at both ends of the main frame 4. The clamping mechanism 7 includes an L-shaped connecting rod 19 that is slidably connected to the guide holes 18. The upper end of the L-shaped connecting rod 19 is fixedly connected to the side of the slider 10, and a clamping block 20 is fixedly installed at the lower end of the L-shaped connecting rod 19.

[0032] The guide hole 18 guides the movement direction of the L-shaped connecting rod 19, ensuring the accurate movement of the clamping block 20. The L-shaped connecting rod 19 connects the slider 10 and the clamping block 20, transmitting the moving force. The clamping block 20 directly contacts and fixes the workpiece, ensuring stability during the riveting process.

[0033] In this embodiment, the clamping block 20 has an air cavity 21 inside, and a sliding hole 22 is provided on one side of the clamping block 20 and communicates with the air cavity 21. A limit ring 23 is fixedly installed at the end of the sliding hole 22, and a sealing block 24 is slidably connected inside the sliding hole 22. A clamping rod 25 is fixedly installed on the outside of the sealing block 24.

[0034] The sliding hole 22 allows the clamping rod 25 to slide within it, adapting to workpieces of different shapes. The limiting ring 23 restricts the movement range of the sealing block 24 within the sliding hole 22, preventing it from falling off. The sealing block 24 slides within the sliding hole 22, connecting with the clamping rod 25, while maintaining the seal of the air chamber 21. The clamping rod 25 directly contacts the workpiece, providing clamping force.

[0035] In practical applications, the workpiece to be riveted is placed on the operating table 2, ensuring the workpiece is properly positioned. The operator presses the foot switch 6 to activate the cylinder 15 of the drive mechanism 5. The piston rod of the cylinder 15 pushes the threaded rod 16 down. The threaded rod 16 is threadedly connected to the threaded cylinder 13, causing the threaded cylinder 13 to rotate. The rotation of the threaded cylinder 13 is transmitted to the gear 14 through the bearing 12. The gear 14 meshes with the racks 11 on both sides, causing the slider 10 to slide along the slide groove 9. The movement of the slider 10 is transmitted to the clamping block 20 through the L-shaped connecting rod 19. The clamping blocks 20 move towards each other, clamping the workpiece. When the clamping rod 25 contacts the workpiece... When the workpiece is being riveted, the clamping rod 25 is pressed into the air chamber 21, and the sealing block 24 moves accordingly. The remaining clamping rods 25 move outward to ensure that all clamping rods 25 can firmly contact the workpiece, adapting to workpieces of different shapes and sizes. Through uniform clamping pressure distribution, damage to the workpiece surface is reduced, and the integrity of the workpiece is protected. At the same time, the riveting head 17 at the end of the threaded rod 16 contacts the rivet, completing the riveting operation. After the riveting is completed, the operator presses the foot switch 6 again, the piston rod of the cylinder 15 resets, the threaded rod 16 rises, the clamping mechanism 7 releases the workpiece, and the riveted workpiece is removed, completing one riveting operation.

[0036] In the description of this utility model, it should be noted that the terms "top," "bottom," "one side," "the other side," "front," "back," "middle part," "inner," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A semi-automatic riveting machine, characterized in that, The device includes four sets of support columns (1) located at the bottom of the entire device. An operating table (2) is fixedly installed on the four sets of support columns (1). A pair of brackets (3) are fixedly installed on the side end of the operating table (2). A main frame (4) is fixedly installed on the pair of brackets (3). A drive mechanism (5) is fixedly installed at the top center of the main frame (4). The drive mechanism (5) is electrically connected to a foot switch (6) via a wire. A clamping mechanism (7) is installed below the main frame (4).

2. The semi-automatic riveting machine according to claim 1, characterized in that, The main frame (4) is hollow inside and has a slide (8) fixedly installed. Slide grooves (9) are provided on both sides of the slide (8), and a slider (10) is slidably connected to each of the slide grooves (9).

3. A semi-automatic riveting machine according to claim 2, characterized in that, A rack (11) is fixedly installed at the bottom of the slider (10), and a through hole is opened in the middle of the slide block (8) and a bearing (12) is installed thereon. A threaded cylinder (13) is installed inside the bearing (12).

4. A semi-automatic riveting machine according to claim 3, characterized in that, A gear (14) is fixedly installed at the bottom of the threaded cylinder (13), and the gear (14) meshes with the racks (11) on both sides. The drive mechanism (5) includes a cylinder (15) fixedly installed on the top of the main frame (4). The output end of the cylinder (15) is downward and a threaded rod (16) is fixedly installed through the piston rod. The threaded rod (16) is threadedly connected to the threaded cylinder (13), and a riveting head (17) is fixedly installed at the end of the threaded rod (16).

5. A semi-automatic riveting machine according to claim 1, characterized in that, The main frame (4) has guide holes (18) at both ends. The clamping mechanism (7) includes an L-shaped connecting rod (19) that slides through the guide hole (18). The upper end of the L-shaped connecting rod (19) is fixedly connected to the side of the slider (10), and the lower end of the L-shaped connecting rod (19) is fixedly installed with a clamping block (20).

6. A semi-automatic riveting machine according to claim 5, characterized in that, The clamping block (20) has an air chamber (21) inside. A sliding hole (22) is provided on one side of the clamping block (20) and is connected to the air chamber (21). A limit ring (23) is fixedly installed at the end of the sliding hole (22). A sealing block (24) is slidably connected inside the sliding hole (22). A clamping rod (25) is fixedly installed on the outside of the sealing block (24).

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